#stu-list {
    position: absolute;
    margin: 50px 0;
    padding-bottom: 100px;

    left: 50%;
    transform: translateX(-50%);
    

}
#stu-list table{
    border-collapse: collapse;
    text-align: center;
}
#stu-list table tr{
}
#stu-list table th,
#stu-list table td {
    border: 1px solid;
    padding: 2px 5px;
    white-space: nowrap;
    padding: 10px 20px;

}
#stu-list table th{
    background-color: skyblue;
}